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Top-down控制图法评定石墨炉原子吸收光谱法测定血中铅含量的不确定度
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作者 丁建东 宁攀良 《化学分析计量》 CAS 2024年第2期117-122,共6页
采用Top-down控制图法评定石墨炉原子吸收光谱法测定血中铅含量的不确定度。依据GBZ/T 316.1—2018《血中铅的测定第1部分:石墨炉原子吸收光谱法》,不同人员每周测定铅质量浓度为(104±15)μg/L的冻干牛血质控样品1次,连续测定35次... 采用Top-down控制图法评定石墨炉原子吸收光谱法测定血中铅含量的不确定度。依据GBZ/T 316.1—2018《血中铅的测定第1部分:石墨炉原子吸收光谱法》,不同人员每周测定铅质量浓度为(104±15)μg/L的冻干牛血质控样品1次,连续测定35次。对检测的35组数据进行离群值、正态性、独立性验证,并用Top-down控制图法评定铅含量的不确定度。血中铅质量浓度质控测试结果为(105.97±12.04)μg/L(95%包含概率)。Top-down控制图法评定血中铅含量的不确定度,简单、易操作,可以作为血铅含量检测的质量控制手段,对实验室检测结果进行趋势性分析,发现潜在的影响检测结果的因素,规避实验室风险。 展开更多
关键词 血中铅 top-down控制图法 不确定度
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Top-Down技术控制图法评定X射线荧光光谱法测定铁矿中SiO_(2)的不确定度
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作者 冯丽丽 丁仕兵 +3 位作者 徐小茗 管嵩 吴雅俊 宋飞 《云南化工》 CAS 2024年第6期96-99,共4页
依据标准GB/6730.62—2005《铁矿石钙、硅、镁、钛、磷、锰、铝和钡含量的测定波长色散X射线荧光光谱法》测定铁矿石中SiO_(2)含量。将SiO_(2)质量分数为8.78%的含砷铁矿标准样品YSBC 14721—98作为质控样品,不同人员不同时间对铁矿质... 依据标准GB/6730.62—2005《铁矿石钙、硅、镁、钛、磷、锰、铝和钡含量的测定波长色散X射线荧光光谱法》测定铁矿石中SiO_(2)含量。将SiO_(2)质量分数为8.78%的含砷铁矿标准样品YSBC 14721—98作为质控样品,不同人员不同时间对铁矿质控样品进行测量得到20个数据,离群值检验后,依据国标GB/T 27407—2010和GB/T 27411—2012中评定过程进行Top-Down技术控制图法不确定度评定。期间精密度在重复性和再现性标准偏差之间,评价合理;平均偏倚和“0”没有显著性差异,无需校正。检测某铁矿样品,SiO_(2)质量分数5.24%,由期间精密度带来的不确定度为0.0256%,由偏倚带来的不确定度为0.0313%。由这两项合成的标准不确定度u为0.0404%,取包含概率p=95%,包含因子k=2,扩展不确定度U为0.08%。评定方法既得到了不确定度,又和日常质控结合起来,保证了检测质量,值得实验室推广使用。 展开更多
关键词 top-down技术 控制图法 不确定度 铁矿 SiO_(2)含量
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Top-down法评定车用柴油中闪点(闭口)的测量不确定度
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作者 张春野 《品牌与标准化》 2024年第5期94-96,共3页
采用Top-down技术评估车用柴油闭口闪点的不确定度,通过验证测试数据的偏倚和精密度,确认数据受控且样品稳定。计算实验室内期间相对标准偏差(Sp,rel)和重复性相对标准偏差(Sr,rel),并通过外部质量控制评估测定结果偏倚(Sbias,rel)。结... 采用Top-down技术评估车用柴油闭口闪点的不确定度,通过验证测试数据的偏倚和精密度,确认数据受控且样品稳定。计算实验室内期间相对标准偏差(Sp,rel)和重复性相对标准偏差(Sr,rel),并通过外部质量控制评估测定结果偏倚(Sbias,rel)。结果表明,实验室间精密度对不确定度贡献显著,日常检测可通过能力验证数据评估精密度控制。 展开更多
关键词 测量不确定度 闪点(闭口) top-down 车用柴油
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Study on the Hierarchy and Structure of Tourist Landscape Appreciation
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作者 周永博 沈敏 《Journal of Landscape Research》 2011年第11期78-80,共3页
Basic attributes of landscape appreciation were summarized as interaction between appreciation subjects and objects,cultural identity and stability,symbolic meaning,preference of subjects,and unification of subjective... Basic attributes of landscape appreciation were summarized as interaction between appreciation subjects and objects,cultural identity and stability,symbolic meaning,preference of subjects,and unification of subjective and objective structures.On this basis,hierarchy and prefe-rence of tourist landscape appreciation were analyzed,classification of cultural groups and their cultural rules would promote landscape appreciation researches,while heterogeneous cultures of tourist landscapes were motives of tourist landscape appreciation,and structural optimization of tourist landscape appreciation would improve the quality of tourist landscape appreciation.Structure of tourist landscape appreciation was discussed according to aesthetic characteristics of tourist landscapes,and three dimensions were included in the structure:"space-scale","time-history" and "mechanism-function".Guided by structuralism aesthetics,planning principles of tourist landscapes were proposed from the perspectives of dimension structure and cultural preference,aesthetic standard of the public and market orientation,symbolism and cultural value. 展开更多
关键词 TOURIST LANDSCAPE appreciation STRUCTURE HIERARCHY CULTURAL rules
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Appreciation of Chinese Garden Composition from Multiple Perspectives
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作者 储可可 《Journal of Landscape Research》 2009年第10期67-71,84,共6页
This article observes the composition of Chinese gardening arts in light of philosophy,aesthetics of painting,stylistics and culture,and tries to explore the correlation between artistic composition and garden composi... This article observes the composition of Chinese gardening arts in light of philosophy,aesthetics of painting,stylistics and culture,and tries to explore the correlation between artistic composition and garden composition. 展开更多
关键词 MULTIPLE PERSPECTIVES appreciation GARDENING ARTS COMPOSITION
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Neo-translation,Appreciation and Analysis of Tennyson's Crossing the Bar
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作者 李绍青 《海外英语》 2011年第9X期223-224,共2页
As a world-widely popular poem,Tennyson's Crossing the Bar attracts more and more people to cherish it.And this paper aims at translating it in a new way,and analyzing it in a fully scientific way.
关键词 TENNYSON CROSSING the BAR new TRANSLATION appreciation ANALYSIS
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Effects of supervised movie appreciation on the improvement of college students’ life meaning sense 被引量:15
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作者 Xinqiang Wang Dajun Zhang +2 位作者 Jinliang Wang Hui Xu Min Xiao 《Health》 2010年第7期804-810,共7页
The purpose of this study was to explore the effects of supervised movie appreciation on improving the life meaning sense among college students. The intervention combined by “pre-video, post counseling” was conduct... The purpose of this study was to explore the effects of supervised movie appreciation on improving the life meaning sense among college students. The intervention combined by “pre-video, post counseling” was conducted on the experimental group, while the control group received no intervention. Results have shown that the scores on the subscales of will to meaning, life purpose, life control, suffer acceptance and on the total scale have improved significantly. No gender difference was found on the intervention effect, and participants receiving intervention maintained higher level on related subscales a week later, indicating that supervised movie appreciation is an effective way to improve the life meaning sense among college students. 展开更多
关键词 College Students Life MEANING SENSE Supervised MOVIE appreciation SUICIDE Prevention MENTAL Health Education
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Appreciation of the Rhyme of Poems and Sonnets
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作者 苏秋芳 《福建教育学院学报》 2001年第4期42-44,共3页
In poetry, the device of ending two or more lines with words that sound alike is called end rhyming;end words that share a particular sound are end rhymes. When used in a poem,end rhymes set up a definite pattern of s... In poetry, the device of ending two or more lines with words that sound alike is called end rhyming;end words that share a particular sound are end rhymes. When used in a poem,end rhymes set up a definite pattern of sounds-a rhyme scheme. 展开更多
关键词 appreciate poem sonnet rhyme end rhyming RHYME scheme
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Integrated top-down and bottom-up proteomics mass spectrometry for the characterization of endogenous ribosomal protein heterogeneity 被引量:1
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作者 Ying Zhang Qinghua Cai +2 位作者 Yuxiang Luo Yu Zhang Huilin Li 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2023年第1期63-72,共10页
Ribosomes are abundant,large RNA-protein complexes that are the sites of all protein synthesis in cells.Defects in ribosomal proteins(RPs),including proteoforms arising from genetic variations,alternative splicing of ... Ribosomes are abundant,large RNA-protein complexes that are the sites of all protein synthesis in cells.Defects in ribosomal proteins(RPs),including proteoforms arising from genetic variations,alternative splicing of RNA transcripts,post-translational modifications and alterations of protein expression level,have been linked to a diverse range of diseases,including cancer and aging.Comprehensive characterization of ribosomal proteoforms is challenging but important for the discovery of potential disease biomarkers or protein targets.In the present work,using E.coli 70S RPs as an example,we first developed a top-down proteomics approach on a Waters Synapt G2 Si mass spectrometry(MS)system,and then applied it to the HeLa 80S ribosome.The results were complemented by a bottom-up approach.In total,50 out of 55 RPs were identified using the top-down approach.Among these,more than 30 RPs were found to have their N-terminal methionine removed.Additional modifications such as methylation,acetylation,and hydroxylation were also observed,and the modification sites were identified by bottomup MS.In a HeLa 80S ribosomal sample,we identified 98 ribosomal proteoforms,among which multiple truncated 80S ribosomal proteoforms were observed,the type of information which is often overlooked by bottom-up experiments.Although their relevance to diseases is not yet known,the integration of topdown and bottom-up proteomics approaches paves the way for the discovery of proteoform-specific disease biomarkers or targets. 展开更多
关键词 Ribosomal proteins top-down MS Bottom-up MS Proteoforms
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On Literary Appreciation from the Author's Life Experience View
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作者 王海燕 《疯狂英语(理论版)》 2017年第1期166-167,170,共3页
Sainte-Beuve is the representative of biographical literature research theory.He demonstrated:" It's difficult to value one's works without studying the author."So in this paper,the author took Ernes... Sainte-Beuve is the representative of biographical literature research theory.He demonstrated:" It's difficult to value one's works without studying the author."So in this paper,the author took Ernest Hemingway and his works as examples to demonstrate how to appreciate literature. 展开更多
关键词 literature appreciate Ernest Hemingway and his works
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Construction of Computer Aided Animation Appreciation System
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作者 Wangqiao Rong 《Journal of Computer and Communications》 2018年第6期15-30,共16页
By using computer multimedia and database technology to build the animation appreciation auxiliary system (AACAS), we classify the classical animation works according to types, categorize the appreciation main points ... By using computer multimedia and database technology to build the animation appreciation auxiliary system (AACAS), we classify the classical animation works according to types, categorize the appreciation main points and define the attribute, and input the corresponding information into the relevant database in real time so as to realize the logical connection of massive animation resources, and make appreciation information be able to realize free storage, rapid retrieval and easy for calling. In addition, the horizontal comparison of multiple works and the vertical comparison of the same work can be realized. This will significantly change the past inefficient situation of animation appreciation under a single thread, greatly improve the timeliness of the appreciation. 展开更多
关键词 ANIMATION appreciation MULTIMEDIA SYSTEM DATABASE Information
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Appreciation of a Great Man:Wu Zhengyi(1916-2013)
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作者 Peter H.Raven 《Plant Diversity》 SCIE CAS CSCD 北大核心 2016年第6期262-263,共2页
Wu Zhengyi was the leading systematic botanist of China during the second half of the 20th Century.His encyclopedic knowledge of Chinese plants,their medicinal uses,and their distributions was shared through a wide va... Wu Zhengyi was the leading systematic botanist of China during the second half of the 20th Century.His encyclopedic knowledge of Chinese plants,their medicinal uses,and their distributions was shared through a wide variety of publications and directly 展开更多
关键词 appreciation of a Great Man FRPS
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Message of appreciations from the Asian Society of Andrology
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作者 钱绍祯 NatwarR.Kalla 《Asian Journal of Andrology》 SCIE CAS CSCD 1999年第1期2-2,共1页
The term andrology was introduced into the medical literature in 1951 by Dr Harald Siebke, Professor ofGynaecology at Bonn, Germany to encompass all areas pertaining to male reproduction, thus identifying thisspeciali... The term andrology was introduced into the medical literature in 1951 by Dr Harald Siebke, Professor ofGynaecology at Bonn, Germany to encompass all areas pertaining to male reproduction, thus identifying thisspecialization as distinct and at a par with gynaecology. However, many years elapsed before the term received thepopularity it deserved. Andrology got recognition in 1969, when Professor Carl Schirren of Hamburg, Germany, 展开更多
关键词 this Message of appreciations from the Asian Society of Andrology
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利用TOP-DOWN法评定电感耦合等离子体原子发射光谱法测定土壤样品中铅元素含量的不确定度 被引量:2
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作者 蔡凌霄 贾苒 +1 位作者 白正伟 王飞龙 《化学分析计量》 CAS 2023年第7期104-108,共5页
采用自上而下的不确定度评定方法(TOP-DOWN法),对酸溶-电感耦合等离子体原子发射光谱法测定土壤样品中铅元素含量的不确定度进行评定,之后使用自下而上的评价方法(GUM法)评定。TOP-DOWN法评定的铅测量不确定度为3.9 mg/kg,GUM法评定的... 采用自上而下的不确定度评定方法(TOP-DOWN法),对酸溶-电感耦合等离子体原子发射光谱法测定土壤样品中铅元素含量的不确定度进行评定,之后使用自下而上的评价方法(GUM法)评定。TOP-DOWN法评定的铅测量不确定度为3.9 mg/kg,GUM法评定的铅测量不确定度为2.8 mg/kg。结果表明,与GUM法评定结果相比,TOPDOWN法评定的土壤中同一水平铅含量的测量不确定度结果基本一致。在积累了大量质量控制样品数据的情况下,与GUM法相比,TOP-DOWN法评定测量不确定度的过程更简单且易于操作,更能反映出实验室检测的长期精密度和准确度水平。 展开更多
关键词 电感耦合等离子体原子发射光谱法 top-down GUM法 不确定度
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PICTURES APPRECIATION
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作者 Xu Hao 《China's Foreign Trade》 2006年第17期54-55,共2页
To follow up the publicizing of Intangible Cultural Heritage, Xu Hao, reporter of China's Foreign Trade photographed these pictures. Not only did these pictures show the static beauty of Chinese traditional garden... To follow up the publicizing of Intangible Cultural Heritage, Xu Hao, reporter of China's Foreign Trade photographed these pictures. Not only did these pictures show the static beauty of Chinese traditional garden, but showed the infinite thinking of modern commercial activities. By 展开更多
关键词 SHOW PICTURES appreciation
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Recognition and Appreciation and the Moderating Role of Self-esteem on Job Satisfaction and Performance among IT Employees in Melaka
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作者 Olurotimi Adebayo Shonubi Norida Abdullah +1 位作者 Rahman Hashim Norhidayu Binti Ab Hamid 《Journal of Health Science》 2016年第5期221-227,共7页
The purpose of this study is to explore and examine employees' perceptions of recognition and appreciation among Telekom Malaysia (TM) employees in Melaka and the psychological influence it has on their job satisfa... The purpose of this study is to explore and examine employees' perceptions of recognition and appreciation among Telekom Malaysia (TM) employees in Melaka and the psychological influence it has on their job satisfaction, performance, productivity, and commitment towards the organizational goals. According to one of the laws of psychology which "says if you want someone to repeat a behavior, you should positively recognize the behavior immediately". Thus, it has been positively affirmed that every human being like to be recognized and appreciated because it is an innate aspiration. Conversely, even though there is nothing complex about recognition and appreciation, studies has found that these items consistently receive the lowest ratings from employees. Furthermore, research conducted over so many eras constantly and consistently discovered that people care about fair treatment, thus, recognition and appreciation of employees must be done appropriately and timely in order for the program to be effective and efficient and achieve its full objective and set goal of motivation. The constructs that will be used in this study will be operationalized using previously-validated and originally developed measures with little or no modifications where necessary to suit the present research context while the primary data of this research will be analyzed using AMOS software. 展开更多
关键词 RECOGNITION appreciation SELF-ESTEEM job satisfaction job performance IT employees psychological effect.
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Linguistic Reflection on the Online Catchword of Appreciation —From the Perspective of Usage-based Language Model and Complex Adaptive System Theory
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作者 HE Xiang 《北京第二外国语学院学报》 2016年第5期139-139,共1页
Language is a special social phenomenon and is always on the changing process with the development of society. During the evolving process of language, new language varieties will continuously emerge due to the change... Language is a special social phenomenon and is always on the changing process with the development of society. During the evolving process of language, new language varieties will continuously emerge due to the changes of some social and cultural factors. Cyber language is universally accepted as one type of the social language varieties. Basically, cyber language can be treated as a complex adaptive system which is influenced by the interaction between users’ cognition, social culture and the surrounding environments. Thus it is safe to say that cyber language is always undergoing a dynamic evolving process. With the usage-based language model as the theoretical foundation, this paper proposes a Complex Adaptive System (CAS) approach to analyze the expression of Appreciation to explore the complex, dynamic and nonlinear development of cyber language from the angle of meaning construction, grammaticalization and functional adaption respectively. It is found that the expression of Appreciation is experiencing adaptively a semantic connotations development and a process of grammatical functions expansion as well. This paper suggests that the emergence and development of cyber language is a novel and trendy social language phenomenon. Network language can achieve its process and evolution under the huge impact of social changes and social promotions. When faced with the changing surroundings, cyber language itself enjoys a timely adaption and responsive development to keep up with the new environments, which reflects the basic principle of language development, namely, language changes with the development of society. 展开更多
关键词 Usage-based LANGUAGE Model Complex Adaptive System Theory the expression of appreciation cyber LANGUAGE LANGUAGE var
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The Development of Literary Appreciation Instrument in Building Students' Character
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作者 Rita Inderawati 《Sino-US English Teaching》 2012年第2期937-945,共9页
Reading literary works does not only function at entertaining, but also gives moral values to influence students' behavior and to strengthen the establishment of character and personality, l,iterature is an important... Reading literary works does not only function at entertaining, but also gives moral values to influence students' behavior and to strengthen the establishment of character and personality, l,iterature is an important subject in learning and becomes a compulsory subject in several faculties. The problem posed in this inquiry is how to develop literary appreciation instrument to establish students' character. Employing development research, this investigation implemented at the Teachers' Training and Education Faculty of Sriwijaya University with 89 students as the respondents is airaed at producing a literary appreciation instrument arranged by collaborating reader response strategy, the theou1 of psycho-literature, Pavlov conditioning theory, and character building theory The findings of this study are: A valid and effective instrument to build students' character by reading and responding literary works in Personality Development course, the developed literary appreciation instrument is significantly effective to increase students' literary appreciation which achiew^s very good category by the emerge of two up to three very good indicators through a test and the result from questionnaire indicates that 95.3% of the students can identify the values in the appreciation instrument when they replied the questions concerning with the story read, and the students' perception toward the importance of appreciating literary works to establish their character is positively perceived (97%). If it is viewed from the strength of the instrument, it is recommended that literary appreciation be important to teach and to disseminate the appreciation instrumem either at the level of language faculty or non-language students and all the levels of education 展开更多
关键词 instrument development literary appreciation literature for all literature across curriculum characterbuilding
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Art is Long, Time is Fleeting: An Appreciation of John Keats'"Ode on a Grecian Urn"
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作者 Guo Yongsui 《厦门大学学报(哲学社会科学版)》 CSSCI 1993年第3期136-137,120,共3页
In our daily life, we come across many things, a flower, a bird, a vase, or a picture, for example, without seeing them, or to be exact, without paying them any special attention. To ordinary eyes, they are what they ... In our daily life, we come across many things, a flower, a bird, a vase, or a picture, for example, without seeing them, or to be exact, without paying them any special attention. To ordinary eyes, they are what they are. But to the sharp, sensitive eyes of a poet, every object has its own beauty, and carries a message deeper than what it seems to do. Through his artistic work, the poet reveals to us the beauty and truth that are hidden from our mediocre eyes, and enables us to enjoy the beauty and see the truth that nature endows to its creations. An American critic once said,"All art 展开更多
关键词 An appreciation of John Keats Ode on a Grecian Urn Art is Long John
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THE PORTRAIT OF A LADY: An Introduction and Appreciation
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作者 Du Ruiqing 《外语教学》 1982年第3期123-132,共10页
By the 1880’s, Henry James had published some twelve volumes, including two full-length novels, and had another volume in preparation. His reputation as a writer had already been established. Yet, being a fastidious ... By the 1880’s, Henry James had published some twelve volumes, including two full-length novels, and had another volume in preparation. His reputation as a writer had already been established. Yet, being a fastidious craftsman, James dismissed all his writings up to this time as merely a series of "experiments of form" and the first stage of a "step-by-step evolution". Now he was confident that he could attain "form" in big subjects and he was determined to do something "big". 展开更多
关键词 THE PORTRAIT OF A LADY An Introduction and appreciation
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